The Presence of a Large Chiari Network in a Patient with Atrial Fibrillation and Stroke

Schwimmer-Okike, Nneka; Niebuhr, Johannes; Schramek, G; Frantz, Stefan; Kielstein, Heike

doi:10.1155/2016/4839315

Cited by 13 publications

(14 citation statements)

References 11 publications

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“…[11]. One of these fatal arrhythmias addressed in literature is atrial fibrillation which can lead to ischemic cerebrovascular accidents in patients [12]. Echocardiography is widely used for assessment of various cardiac structures and left ventricular function.…”

Section: Discussionmentioning

confidence: 99%

Chiari Network – Just an Innocent Bystander or Can Have Serious Impact on Clinical Outcomes

Asif¹,

Farooq²,

Mumtaz³

2019

AJIM

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Chiari network, a remnant of sinus venosus is often incidentally diagnosed on routine echocardiograms. Chiari network occurs due to incomplete resorption of right valve of sinus venosus. It is often noticed as fenestrated membranous structure or reticular network like structure in the valve of inferior vena cava and coronary sinus. The structure was first described by Von Rokitansky in 1875 and gained its name after pathologist Hans Chiari in 1897 when he described the structure in 11 cadavers. There are inconsistencies in the exact prevalence of this structure and has been reported in literature from 2-13.6%. Most of this data is available from cadaveric or autopsied hearts. These structures are usually considered as benign congenital malformations but literature has reported various cases which have resulted in medical complications including endocarditis, thromboembolism or procedural difficulties. These structures can also mimic right atrial pathologies or thrombus creating a diagnostic challenge. It is important that clinicians are aware of these since misdiagnosis can have significant effect on clinical course and outcomes of the patients. The possibility of the presence of these congenital remnants should be kept in mind during clinical decision making. We present two clinical scenarios with incidental diagnosis of Chiari network and its effect on the clinical course of these patients.

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Section: Discussionmentioning

confidence: 99%

Chiari Network – Just an Innocent Bystander or Can Have Serious Impact on Clinical Outcomes

Asif¹,

Farooq²,

Mumtaz³

2019

AJIM

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“…While typically considered a benign anatomical variant, it has been associated with cardiac pathologies such as arrhythmia, paradoxical emboli, persistent patent foramen ovale, formation of an atrial septal aneurysm, thrombi formation, and entrapment of thrombi or catheters. 1 , 3 , 4 Differentiating Chiari network from a more acutely pathological process is critical in the evaluation and management of hypercoagulable patients.…”

Section: Discussionmentioning

confidence: 99%

Right Atrial Thrombus or Chiari Network?

Fredericks

Liu

Colla

2017

CPCEM

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“…This right atrial network may occasionally mimic thrombus, vegetation or mass. [13][14][15][16] From the therapeutic point of view, Chiari network has been reported to be associated with thromboembolism, 7 infective endocarditis, 6 arrhythmia, 7 and others. Contrarily, the sieve-like structure of Chiari network might play protective role against migration or propagation of thrombus formed in IVC to cause pulmonary embolism.…”

Section: Original Articlementioning

confidence: 99%

“…[3][4][5] Traditionally, Chiari network has been considered as a benign anatomical entity having no clinical significance. Subsequently, the outlook has been challenged, and it has been reported to cause diagnostic confusion, 6 be associated with diverse clinical conditions, [7][8][9] or act as a physical barrier to invasive procedures. 10 The prevalence of Chiari network in Bangladeshi subjects is not known.…”

Section: Introductionmentioning

confidence: 99%

Prevalence and Clinical Profile of Chiari network in Bangladeshi subjects: Analysis of 1832 subjects by Echocardiography

Islam

Gupta

Majumder³

et al. 2019

Cardiovasc. j.

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Background: The Chiari network is mobile, serpentine, filament-like structures occasionally seen in right atrium near the opening of inferior vena cava and coronary sinus. Sometimes it may cause diagnostic confusion with right atrial pathologies. Methods: This was a cross sectional study conducted from September 2017 to August 2018 in a private consultation center in Dhaka. All patients who underwent transthoracic echocardiography were included. Chiari network was diagnosed and any relevant clinical condition was recorded. Results: Out of 1832 echo studies, Chiari network was found in 90 subjects giving a prevalence of 4.91%. More than half (55.6%) had otherwise normal heart, 20% had ischaemic heart disease, 7.8% had cardiomyopathy, 6.7% congenital heart disease, while 3.3% had valvular heart disease. Conclusion: The Chiari network is often an incidental diagnosis, though it may not be so rare. Clinicians should be aware of it to avoid diagnostic dilemma and to overcome difficulties while performing cardiovascular interventions. Cardiovasc. j. 2019; 11(2): 93-97

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The Presence of a Large Chiari Network in a Patient with Atrial Fibrillation and Stroke

Cited by 13 publications

References 11 publications

Chiari Network – Just an Innocent Bystander or Can Have Serious Impact on Clinical Outcomes

Chiari Network – Just an Innocent Bystander or Can Have Serious Impact on Clinical Outcomes

Right Atrial Thrombus or Chiari Network?

Prevalence and Clinical Profile of Chiari network in Bangladeshi subjects: Analysis of 1832 subjects by Echocardiography

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